/Engine/Source/Runtime/Engine/Public/Animation/AnimationStreaming.h
Gets a pointer to a chunk of animation data
Either the desired chunk or NULL if it's not loaded
virtual const [FCompressedAnimSequence](API\Runtime\Engine\Animation\FCompressedAnimSequence) * GetLoadedChunk ( const [UAnimStreamable](API\Runtime\Engine\Animation\UAnimStreamable) * Anim, uint32 ChunkIndex, bool bRequestNextChunk ) const